DBTBC21/64

View detailed technical data, stock status, and sourcing information for: DBTBC21/64
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Federal Supply Group

Hand Tools

Federal Supply Classification

5133 Countersinks: Hand and Machine, Counterbores and Drill Bits

National Stock Number

5133-00-988-5708

Item Name Code

05237

Assigment Date

06/23/1983 (43 years ago)

An end cutting tool having two or more cutting edges, and having helical flutes or grooves adjacent thereto for the admission of coolant and the ejection of cuttings or chips. It is used for drilling holes in various materials. Excludes:drill, masonry (as modified); and drill,twist, bone. See also drill, pivot, jeweler's and drill, hardened steel, carbide tipped.

0.328 inches nominal shank diameter, general purpose cutting end style, straight round shank style, 4.625 inches nominal overall length, 0.3281 inches nominal cutting diameter

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Shank Diameter: 0.328 inches nominal
Shank Style: straight round
Overall Length: 4.625 inches nominal
Cutting End Style: general purpose
Nominal Cutting Diameter: 0.3281 inches
Cutting Rotation Direction: right-hand
Flute Length: 3.3125 inches nominal
Point Type: split
Point Angle: 135.0 degrees nominal
Special Features: jobbers lg; fractional size 21/64
Material: steel alloy overall
Specification/Standard Data: 80205-nas907 professional/industrial association standard
Nondefinitive Spec/Std Data: j type

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5133-01-050-7937	No Name Available	08/01/2000
5133-01-263-2299	No Name Available	02/01/2001
5133-01-406-9634	No Name Available	09/01/2001
5133-01-438-9244	No Name Available	03/01/2005
5133-01-648-7898	No Name Available	04/01/2023
5133-01-650-3686	No Name Available	04/01/2023

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
04299	Twist Drill
17195	Twist Drill
18677 OLE PRO	Twist Drill
2013 21/64	Twist Drill
300C 21/64	Twist Drill
3011 21/64	Twist Drill
46621	Twist Drill
5133PL0881859	Twist Drill
550 21/64	Twist Drill
603 21/64	Twist Drill
6321D	Twist Drill
DBC21/64	Twist Drill
DBC21/64A	Twist Drill
DBTBC21/64	Twist Drill
NAS907 TYJSZ21/64	Twist Drill
ZHVY0216-18	Twist Drill
ZLW0282-18	Twist Drill

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5133-00-988-5708?

The FSCG of the NSN 5133-00-988-5708 is 5133

Does the NSN 5133-00-988-5708 have a Schedule B code assigned?

Yes, the Schedule B code is 8205100000

Does NSN 5133-00-988-5708 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5133-00-988-5708 contain precious materials?

Item does not contain precious metal.

Does NSN 5133-00-988-5708 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5133-00-988-5708 was assigned to the Federal Catalog?

It was assigned 43 years ago, on Thu, Jun 23, 1983